Question

if 12 subtracted from seven times a number is equal to five times the sum of the number and 2, find the number

Answer 1

Let the number be 'x'
7x-12=5(x+2)
7x-12=5x+10
7x-5x=10+12
2x=22
x=22÷2
x=11
The number is 11

Answer 2

The required number is equal to 11.

Step-by-step explanation:

Let the required number = x

To find, the required number = ?

According to given condition,

$7x-12=5(x+2)$

⇒ $7x-12=5x+10$

⇒ $7x-5x=10+12$

⇒ $2x=22$

⇒ $x=\dfrac{22}{2}$

⇒ $x=11$

∴ $x=11$

Hence, the required number is equal to 11.